In astronomy, what does retrograde mean? And what connection does it have to astrology? We explain how planets move across ...

The copy of "Harmonia Macrocosmica" dates back to the 17th century and includes ancient theories of the universe ...

Claudius Ptolemy was born around AD 85, and spent most of his long life in Alexandria. He was a noted geographer, and constructed a map of Europe whose shapes agree remarkably well with the ...

For their latest partnership, the luxury travel purveyor Rimowa has tapped British abstract artist Ptolemy Mann. She is adept at working with intricate, vivid textiles and now adds her colorful ...

“The act of hand weaving and dyeing cloth is extremely labour intensive – it can take months to make one piece,” says British artist Ptolemy Mann.

On the side of the coin on the left is the head of a man facing right, wearing the skin from an elephant's head, trunk turned up and tusks protruding out, small dots surround the border. The other ...

On the side of the coin on the left is a man's head facing right, with long curly tendrils of hair held in place with an ornamental headband, small dots surround the border. The other side of the coin ...

The Roman geographer Ptolemy places them in the Southern uplands ... This was the excuse used by the Roman Emperor Claudius to conquer southern Britain in 43 AD. The Catuvellauni were one of ...